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Date: Fri, 3 Feb 2017 16:58:24 -0800 From: Subhash Jadavani <subhashj@...eaurora.org> To: vinholikatti@...il.com, jejb@...ux.vnet.ibm.com, martin.petersen@...cle.com Cc: linux-scsi@...r.kernel.org, Venkat Gopalakrishnan <venkatg@...eaurora.org>, Subhash Jadavani <subhashj@...eaurora.org>, linux-kernel@...r.kernel.org (open list) Subject: [PATCH v1 8/8] scsi: ufs: dump hw regs on link failures From: Venkat Gopalakrishnan <venkatg@...eaurora.org> Dump host state, power info and host/vendor specific registers on link failures. This provides useful info to debug the failures. Signed-off-by: Venkat Gopalakrishnan <venkatg@...eaurora.org> Signed-off-by: Subhash Jadavani <subhashj@...eaurora.org> --- drivers/scsi/ufs/ufshcd.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a99a673..8b721f4 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3554,6 +3554,12 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) ret = (status != PWR_OK) ? status : -1; } out: + if (ret) { + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } + spin_lock_irqsave(hba->host->host_lock, flags); hba->active_uic_cmd = NULL; hba->uic_async_done = NULL; @@ -4146,8 +4152,12 @@ static int ufshcd_link_startup(struct ufs_hba *hba) ret = ufshcd_make_hba_operational(hba); out: - if (ret) + if (ret) { dev_err(hba->dev, "link startup failed %d\n", ret); + ufshcd_print_host_state(hba); + ufshcd_print_pwr_info(hba); + ufshcd_print_host_regs(hba); + } return ret; } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
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